print a message on load to public the name of the command
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It appears that you're using the plugin template and it has a MyPlugin class. Put your WriteMessage statement in the MyPlugin.Initialize event. It is already created for you.
Ed
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How to post your code.
If you've deleted it, you can add a new class file to your project and paste this code into it. Then put your code where it says "Initialize your plug-in application here". Don't forget to change the namespace to match what you have in MyCommands.
// (C) Copyright 2002-2009 by Autodesk, Inc.
//
// Permission to use, copy, modify, and distribute this software in
// object code form for any purpose and without fee is hereby granted,
// provided that the above copyright notice appears in all copies and
// that both that copyright notice and the limited warranty and
// restricted rights notice below appear in all supporting
// documentation.
//
// AUTODESK PROVIDES THIS PROGRAM "AS IS" AND WITH ALL FAULTS.
// AUTODESK SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
// MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. AUTODESK, INC.
// DOES NOT WARRANT THAT THE OPERATION OF THE PROGRAM WILL BE
// UNINTERRUPTED OR ERROR FREE.
//
// Use, duplication, or disclosure by the U.S. Government is subject to
// restrictions set forth in FAR 52.227-19 (Commercial Computer
// Software - Restricted Rights) and DFAR 252.227-7013(c)(1)(ii)
// (Rights in Technical Data and Computer Software), as applicable.
//
using System;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.Runtime;
// This line is not mandatory, but improves loading performances
[assembly: ExtensionApplication(typeof(TID_.MyPlugin))]
namespace TID_
{
/// This class is instantiated by AutoCAD once and kept alive for the
/// duration of the session. If you don't do any one time initialization
/// then you should remove this class.
public class MyPlugin : IExtensionApplication
{
void IExtensionApplication.Initialize()
{
// Add one time initialization here
// One common scenario is to setup a callback function here that
// unmanaged code can call.
// To do this:
// 1. Export a function from unmanaged code that takes a function
// pointer and stores the passed in value in a global variable.
// 2. Call this exported function in this function passing delegate.
// 3. When unmanaged code needs the services of this managed module
// you simply call acrxLoadApp() and by the time acrxLoadApp
// returns global function pointer is initialized to point to
// the C# delegate.
// For more info see:
// http://msdn2.microsoft.com/en-US/library/5zwkzwf4(VS.80).aspx
// http://msdn2.microsoft.com/en-us/library/44ey4b32(VS.80).aspx
// http://msdn2.microsoft.com/en-US/library/7esfatk4.aspx
// as well as some of the existing AutoCAD managed apps.
// Initialize your plug-in application here
}
void IExtensionApplication.Terminate()
{
// Do plug-in application clean up here
}
}
}
Ed
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How to post your code.
Thats useful when dealing with resource management, but isn't all that common with more mundane, day-to-day functions.
Consider that you might be connected to a database in real-time. The initialize method would establish the connection, do some initial auditing, record locking, and so on. When you are finished you may want to ensure the connection is closed/released, possibly signalling other applications that changes are complete and they are clear to use it.
Another example may be a custom licensing method. The initialize method would check out a license if available, or lock out functions if not. When done any checked out license would be released.
If you are going to fly by the seat of your pants, expect friction burns.
"I don't know" is the beginning of knowledge, not the end.
Hi,
Initialize() method is run as soon as the app is loaded, for some tasks, it will be a better way to wait for the AutoCAD initialization complete which can be done using the Application.Idle event.
Anyway, in my opinion, the best way to uderstand this is to make some simple tests by yourself:
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.Runtime;
using System;
using System.Windows.Forms;
using AcAp = Autodesk.AutoCAD.ApplicationServices.Application;
[assembly: ExtensionApplication(typeof(ExtensionApplicationTest.TestApp))]
namespace ExtensionApplicationTest
{
public class TestApp : IExtensionApplication
{
public void Initialize()
{
MessageBox.Show("Initialize", "Test", MessageBoxButtons.OK, MessageBoxIcon.Information);
AcAp.Idle += OnIdle;
}
void OnIdle(object sender, EventArgs e)
{
AcAp.Idle -= OnIdle;
MessageBox.Show("Idle", "Test", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
public void Terminate()
{
MessageBox.Show("Terminate", "Test", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
}
Depending on how the application loads, you'd see when Initialize and OnIdle occur (you'd also see that Terminate never occurs in AutoCAD...).
You can use the attached plugin to test what happens with the Autoloader mechanism (unblock the ZIP file if neessary and extract the ExtensionApplicationTest.bundle folder in %appdata%\Autodesk\ApplicationPlugins).
The Terminate() method is run after AutoCAD closed (that's why I said it "never occurs in AutoCAD").
As dgorsman said, it can be use to release external resources, close a connection to a database...
I cannot say why the TEST command is unknown for you (it works fine here).
You can try to remove the ExtensionApplication attribute after the using directives ("This line is not mandatory, but improves loading performances").
Or add a CommandClass one pointing on a Commands class which may contain the commands methods (this can be prefereably done in a separate file or in the same one as below):
using Autodesk.AutoCAD.ApplicationServices; using Autodesk.AutoCAD.Runtime; using System; using System.Windows.Forms; using AcAp = Autodesk.AutoCAD.ApplicationServices.Application;
// These lines are not mandatory, but improve loading performances [assembly: ExtensionApplication(typeof(ExtensionApplicationTest.TestApp))] [assembly: CommandClass(typeof(ExtensionApplicationTest.Commands))] namespace ExtensionApplicationTest { public class TestApp : IExtensionApplication { public void Initialize() { MessageBox.Show("Initialize", "Test", MessageBoxButtons.OK, MessageBoxIcon.Information); AcAp.Idle += OnIdle; } void OnIdle(object sender, EventArgs e) { AcAp.Idle -= OnIdle; MessageBox.Show("Idle", "Test", MessageBoxButtons.OK, MessageBoxIcon.Information); } public void Terminate() { MessageBox.Show("Terminate", "Test", MessageBoxButtons.OK, MessageBoxIcon.Information); } } public class Commands { [CommandMethod("Test")] public void justTest() { MessageBox.Show("Just a simple test."); } } }
Thank you gile that works like a charm and your explanations with codes turns the shade into light .
